refactor: move brother_node development artifact to dev/test-nodes subdirectory

Development Artifact Cleanup:
✅ BROTHER_NODE REORGANIZATION: Moved development test node to appropriate location
- dev/test-nodes/brother_node/: Moved from root directory for better organization
- Contains development configuration, test logs, and test chain data
- No impact on production systems - purely development/testing artifact

✅ DEVELOPMENT ARTIFACTS IDENTIFIED:
- Chain ID: aitbc-brother-chain (test/development chain)
- Ports: 8010 (P2P) and 8011 (RPC) - different from production
- Environment: .env file with test configuration
- Logs: rpc.log and node.log from development testing session (March 15, 2026)

✅ ROOT DIRECTORY CLEANUP: Removed development clutter from production directory
- brother_node/ moved to dev/test-nodes/brother_node/
- Root directory now contains only production-ready components
- Development artifacts properly organized in dev/ subdirectory

DIRECTORY STRUCTURE IMPROVEMENT:
📁 dev/test-nodes/: Development and testing node configurations
🏗️ Root Directory: Clean production structure with only essential components
🧪 Development Isolation: Test environments separated from production

BENEFITS:
✅ Clean Production Directory: No development artifacts in root
✅ Better Organization: Development nodes grouped in dev/ subdirectory
✅ Clear Separation: Production vs development environments clearly distinguished
✅ Maintainability: Easier to identify and manage development components

RESULT: Successfully moved brother_node development artifact to dev/test-nodes/ subdirectory, cleaning up the root directory while preserving development testing environment for future use.

dev/env/node_modules/@streamparser/json-node/test/separator.ts

@@ -0,0 +1,119 @@
+import {
+  runJSONParserTest,
+  runTokenParserTest,
+  TestData,
+} from "./utils/testRunner.js";
+import JSONParser from "../src/jsonparser.js";
+import TokenParser from "../src/tokenparser.js";
+import TokenType from "@streamparser/json/utils/types/tokenType.js";
+
+describe("separator", () => {
+  const testData: TestData[] = [
+    { value: "true", expected: [true] },
+    { value: "false", expected: [false] },
+    { value: "null", expected: [null] },
+    { value: '"string"', expected: ["string"] },
+    { value: "[1,2,3]", expected: [1, 2, 3, [1, 2, 3]] },
+    {
+      value: '{ "a": 0, "b": 1, "c": -1 }',
+      expected: [0, 1, -1, { a: 0, b: 1, c: -1 }],
+    },
+  ];
+
+  const expected = testData
+    .map(({ expected }) => expected)
+    .reduce((acc, val) => [...acc, ...val], []);
+
+  const separators = ["", "\n", "\t\n", "abc", "SEPARATOR"];
+  separators.forEach((separator) => {
+    test(`separator: "${separator}"`, async () => {
+      let i = 0;
+
+      await runJSONParserTest(
+        new JSONParser({ separator }),
+        testData.flatMap(({ value }) => [value, separator]),
+        ({ value }) => {
+          expect(value).toEqual(expected[i]);
+          i += 1;
+        },
+      );
+    });
+  });
+
+  test("support multiple whitespace separators", async () => {
+    let i = 0;
+    const value = "1 2\t3\n4\n\r5 \n6\n\n7\n\r\n\r8 \t\n\n\r9";
+    const expected = [1, 2, 3, 4, 5, 6, 7, 8, 9];
+    const separator = "";
+
+    await runJSONParserTest(
+      new JSONParser({ separator }),
+      value,
+      ({ value }) => {
+        expect(value).toEqual(expected[i]);
+        i += 1;
+      },
+    );
+  });
+
+  test(`separator: fail on invalid value`, async () => {
+    try {
+      await runJSONParserTest(new JSONParser({ separator: "abc" }), ["abe"]);
+    } catch (err: unknown) {
+      expect(err).toBeInstanceOf(Error);
+      expect((err as Error).message).toEqual(
+        'Unexpected "e" at position "2" in state SEPARATOR',
+      );
+    }
+  });
+
+  test(`fail on invalid token type`, async () => {
+    try {
+      await runTokenParserTest(new TokenParser({ separator: "\n" }), [
+        { token: TokenType.TRUE, value: true },
+        { token: TokenType.TRUE, value: true },
+      ]);
+      fail("Error expected on invalid selector");
+    } catch (err: unknown) {
+      expect(err).toBeInstanceOf(Error);
+      expect((err as Error).message).toEqual(
+        "Unexpected TRUE (true) in state SEPARATOR",
+      );
+    }
+  });
+
+  test("fail on invalid value passed to TokenParser", async () => {
+    try {
+      await runTokenParserTest(new TokenParser({ separator: "\n" }), [
+        { token: TokenType.TRUE, value: true },
+        { token: TokenType.SEPARATOR, value: "\r\n" },
+      ]);
+      fail("Error expected on invalid selector");
+    } catch (err: unknown) {
+      expect(err).toBeInstanceOf(Error);
+      expect((err as Error).message).toEqual(
+        'Unexpected SEPARATOR ("\\r\\n") in state SEPARATOR',
+      );
+    }
+  });
+
+  test("not fail when whitespaces match separator", async () => {
+    let i = 0;
+    const value = `{
+      "a": 0,
+      "b": 1,
+      "c": -1
+    }`;
+    const expected = [0, 1, -1, { a: 0, b: 1, c: -1 }];
+    const separator = "\n";
+
+    await runJSONParserTest(
+      new JSONParser({ separator }),
+      value,
+      ({ value }) => {
+        expect(value).toEqual(expected[i]);
+        i += 1;
+      },
+    );
+  });
+});